He has some of the best trieps I have ever seen, reminds me of the Craig Titus tricep shots from Gold's Venice-and also Samir with the cross striations (but him and Samir have tri's that are different shaped).
His DEFINITLEY has oil or some other sunbstance in his pecs, they are just pumped full of something, espcecially the RIGHT pec.
Is he natural-he certainly could be, no way to tell short of a blood test.